BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 154 59.5%
2 United States 39 15.1%
3 Germany 21 8.1%
4 Netherlands 16 6.2%
5 France 8 3.1%
6 Canada 7 2.7%
7 Russia 5 1.9%
8 Hong Kong 4 1.5%
9 Norway 2 0.8%
10 Moldova, Republic of 1 0.4%
11 Brazil 1 0.4%
12 Ukraine 1 0.4%